Description from Flora of China
Procris peduncularis Royle, Ill. Bot. Himal. Mts. t. 83. 1839; Elatostema ovatum Wight; Lecanthus obtusus (Royle) Handel-Mazzetti; L. sasakii Hayata; L. wallichii Weddell; L. wightii Weddell; Procris obtusa Royle.
Herbs perennial, stoloniferous, monoecious or dioecious. Stems often branched, 25-70 cm tall, pubescent distally. Stipules oblong, 3-9 mm, membranous, apex obtuse; petiole 2-8 cm, sparsely pubescent; leaf blade unequal in same pair, ovate to lanceolate, 4-15 × 2-6.5 cm, 3-veined, lateral basal pair often unequal, 1 reaching to middle, anastomosing with adjacent secondary veins before margin, other reaching to tooth of distal margin, lateral veins numerous, sparsely hirsute adaxially, sparsely pubescent on veins abaxially, base slightly obliquely rounded, rarely broadly cuneate, margin dentate-serrate, apex usually acuminate; cystoliths linear, conspicuous on both surfaces. Male inflorescences capitate, receptacle discoid, 8-35 mm in diam.; peduncle 5-30 cm. Female inflorescences on discoid receptacles 5-10 mm in diam.; peduncle 3-12 cm; involucral bracts in 1 or 2 rows, ovate or triangular, ca. 1 mm, membranous. Male flowers pedicellate; perianth lobes 5, unequal, obovate-oblong, corniculate below apex; stamens 5; rudimetary ovary minute, conic. Female flowers shortly pedicellate: perianth lobes (3 or)4(or 5), subequal or lobes by the margin of discoid receptacle unequal, oblong-obovate, 2 lobes corniculate below apex; staminodes conspicuous, elliptic-oblong, ca. 0.8 mm. Achene brownish gray, ellipsoid-ovoid, 0.8-1 mm, U-shaped elevated appendix along dorsi-ventral edge, verrucose. Fl. Jul-Oct, fr. Sep-Nov.
Shady, moist places in forests, along streams; 1300-2700 m. Fujian, Guangdong, Guangxi, Hunan, Jiangxi, Sichuan, Taiwan, E and S Xizang, Yunnan [Bhutan, India, Indonesia, Nepal, Pakistan, Philippines, Sri Lanka, Sikkim, Vietnam; Africa].